[propbeanie]

The surfaced AI subs are found in the Sea folder, and their folder names begin with "NSS_" prefixes. The JyunsenB is the ubiquitous IJN sub, and it has hydrophones after 19430101, so when you are headed that way prior to then, no hydrophone.

The AI subs, being in the Sea folder, are set as "Elite Destroyer Escorts" Type 17 and 18, which is what gives them their AI "attack" attitude. It would be nice if there was some form of scripting in the game to control their maniacal behavior, but alas, not in SH4. At this time, we have NOT included any submerged AI subs. During testing, we would discover that we encountered one after the torpedoes struck... The game does not have any "logic" for the player sub to identify a submerged threat, nor does it have similar for "Incoming torpedo!!!" We therefore do not have the Event Camera give you any penalty, so you can at least possibly "see" a torpedo launch, and therefore be aware of someone shooting torpedoes at you, or someone...

You probably encountered that Jyunsen just after an airplane lauch, and they may have still been in the process of trying to button the ship up for proper submarine operations... at least, that's the back story we'll use... lol - but seriously, there are four IJN subs that carry airplanes, the JyunsenB among them, and there most likely is an airplane or two flying around up there at any given time from about February 1942 through September 1942 that "launched" from the subs...

A little note about the FotRSU Manila (and Pearl for that matter) at the start of the war, is that you are not assigned missions like any other mod. There are specific missions for certain boats. An S-Boat usuall has a 4 in 5 chance of a "quiet" initial assignment in close waters, not too far from Manila. That 1 in 5 chance takes you to San Bernardino Straits where you will almost definitely encounter at least a DD and some seaplane tenders, but if you venture into the open seas, you might encounter two or three invasion forces. The 'quiet" missions near Manila end up turning into terror missions as most of the S-Boats were ordered to penetrate Lingayen Gulf, and you do run a strong chance of encountering either of two landing forces, and / or the cover force. All of them have so many DD, you can see why the real boats had a tough time of getting close to them. As it stands now, there are a few unique missions for 2nd patrols (supply drops etc), but most do revert to "the usual" at Surabaya, but when you get to Fremantle, the odds for SpecOps go up, and you never know what you'll encounter. Then you transfer to Brisbane, and all the fun of hunting in that area with all of the planes that Rabaul and Buna can throw up to look for you...